4-1 or 4-2-1 exhaust headers? [Archive] - Toyota MR2 Message Board

headers, yada, 4-2-1, exhaust, basically, heard, specifications, concerned, modding, long, farther, experience, listen, people, find, underneath, actual, advertisments, fine, make, fits, work, final, till, weld, reduction, custom, tubing, price, engine, racing, found, higher, weapon, money, worth, powerband, improve, torque, shift, opposed, power, thing, http://weapon-r.com/english/index.php?main_page=product_info&cpath=572&products_id=6229, development, link, agree, http://weapon-r.com/english/images/953-116-104.jpg, high, optimized

I